EP2497975A1 - Wear-compensation device for a gear - Google Patents

Wear-compensation device for a gear Download PDF

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Publication number
EP2497975A1
EP2497975A1 EP12158024A EP12158024A EP2497975A1 EP 2497975 A1 EP2497975 A1 EP 2497975A1 EP 12158024 A EP12158024 A EP 12158024A EP 12158024 A EP12158024 A EP 12158024A EP 2497975 A1 EP2497975 A1 EP 2497975A1
Authority
EP
European Patent Office
Prior art keywords
eccentric
fixed support
bearing
external element
gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12158024A
Other languages
German (de)
French (fr)
Other versions
EP2497975B1 (en
Inventor
Romuald Lescorail
Carole Girandin
Daniel Jansen
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SKF AB
Original Assignee
SKF AB
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Filing date
Publication date
Application filed by SKF AB filed Critical SKF AB
Publication of EP2497975A1 publication Critical patent/EP2497975A1/en
Application granted granted Critical
Publication of EP2497975B1 publication Critical patent/EP2497975B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/22—Toothed members; Worms for transmissions with crossing shafts, especially worms, worm-gears
    • F16H55/24—Special devices for taking up backlash
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • F16H57/022—Adjustment of gear shafts or bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
    • F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • F16H2057/0213—Support of worm gear shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • F16H57/022—Adjustment of gear shafts or bearings
    • F16H2057/0222—Lateral adjustment
    • F16H2057/0224—Lateral adjustment using eccentric bushes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19619—Displaceable elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19642—Directly cooperating gears
    • Y10T74/19698—Spiral
    • Y10T74/19828—Worm

Definitions

  • the present invention relates to the field of wear-compensation devices for gear, notably used in assisted-steering mechanisms for motor vehicles.
  • An assisted-steering mechanism usually comprises an electric assistance motor and a worm mounted on an output shaft of the said motor and meshing with a toothed wheel for example fixed to the shaft of the steering column or connected to the steering rack via an intermediate pinion.
  • Patent US-B1-6,763,738 discloses an assisted-steering mechanism for a motor vehicle comprising means for adjusting the distance separating the axes of the worm and of the associated toothed wheel so as to be able to adjust the clearance that exists between the teeth of the gear during assembly.
  • This assisted-steering mechanism comprises no means to limit the phenomena of wear of the gear set over time.
  • one end of the worm connected to the electric assistance motor is mounted rotatably in an eccentric bore of a movable sleeve, the said sleeve being connected to a compression spring.
  • the compression spring causes the sleeve to rotate inside the associated housing. This gives an automatic compensation for the wear of the gear.
  • the object of the present invention is to overcome this drawback.
  • the object of the present invention is to provide a wear-compensation device for a gear easy to manufacture, to install, having a restricted space requirement and economic.
  • the wear-compensation device for a gear comprises a fixed support capable of being fixed axially on an external element in order to keep the device on the said external element, a bearing designed to be mounted on a shaft comprising one of the wheels of the gear, and an eccentric mounted on the bearing and designed to be in contact with the external element, the said eccentric being able to move angularly relative to the fixed support.
  • the device comprises a torsion spring mounted axially between the fixed support and the eccentric and capable of exerting a circumferential preload force on the said eccentric.
  • the torsion spring comprises a first end mounted inside a recess of the eccentric and a second end interacting with the fixed support.
  • the fixed support comprises a centring portion for centring the torsion spring.
  • the torsion spring is coaxial with the bearing.
  • the second end of the torsion spring may abut against a bearing lug of the fixed support.
  • the fixed support comprises clip fastening means adapted to ensure the axial attachment of the device to the external element.
  • the fixed support may comprise a rotation blocking means capable of maintaining the predetermined angular position of the said support relative to the external element.
  • the bearing comprises an inner ring designed to be mounted on the shaft supporting one of the wheels, an outer ring on which the eccentric is mounted, and at least one row of rolling elements placed between the said rings.
  • the bearing may be a sliding bearing.
  • the wheel is integrally formed on the shaft.
  • the wheel may be integrally formed on the shaft so as to form a screw.
  • the invention also relates to an assisted-steering mechanism for a motor vehicle comprising a wear-compensation device as defined above.
  • a wear-compensation device referenced 10 in its entirety, is associated with a gear of the type with a wheel 12 and with a worm 14.
  • the gear illustrated is a crossed gear set and the axes 12a, 14a of the toothed gear and of the worm are orthogonal.
  • the device 10 comprises a fixed support 16 forming a cap designed to be mounted on a tubular housing 18 external to the said device, a rolling bearing 20 mounted on an end trunnion 14b of the worm, an eccentric 22 mounted on the rolling bearing, and a torsion spring 24 capable of applying a permanent circumferential force between the support 16 and the said eccentric.
  • the worm 14 extends axially in the housing 18, the said housing comprising an opening 18a allowing the passage of the toothed wheel 12 so that the thread or threads of the worm mesh with the teeth of the wheel.
  • the bearing 20 (shown schematically) has a rotation axis 20a coaxial with the axis 14a of the worm. It comprises an inner ring mounted tightly on the trunnion 14b of the said worm and butting axially against a shoulder of the trunnion, an outer ring on which the eccentric 22 is mounted, a row of rolling elements, for example balls, and seals mounted radially between the said rings.
  • the fixed support 16 comprises a radial wall 26 closing off an axial end of the housing 18 and extended by an annular centring portion 28, coaxial with the axis 20a of the bearing and pressing axially against the inner ring of the said bearing.
  • the centring portion 28 comprises a blind hole 30 inside which the trunnion 14b of the worm extends with a radial clearance.
  • the support 16 also comprises a plurality of axial lugs 32 extending from the wall 26 axially on the side of the centring portion 28.
  • the lugs 32 are spaced relative to one another in the circumferential direction.
  • Each lug 32 comprises, at its free end, a hook extending radially outwards and designed to interact with a matching recess arranged in the bore of the housing 18.
  • the lugs 32 form snap-fitting or clip fastening means for fitting the support 16 to the housing making it possible to obtain the axial attachment of these two elements.
  • the support 16 may for example be made in a single piece
  • the eccentric 22 comprises a cylindrical bore 34 inside which is tightly mounted the outer ring of the bearing 20 and a cylindrical external surface 36, with an axis 36a which is radially offset relative to the axis 20a of the bearing.
  • the bore 34 comprises a radial protuberance (not referenced) extending inwards and forming an axial stopping surface for the outer ring of the bearing 20.
  • the external surface 36 of the eccentric presses radially against a matching cylindrical bearing surface 38 of the bore of the housing 18.
  • the eccentric 22 can move angularly relative to the fixed support 16, to the housing 18 and to the worm 14.
  • the turns of the spring 24 have, in cross section, a square profile. Alternatively, it is of course possible to provide turns having another profile, for example circular.
  • the device 10 also comprises an annular seal 42 mounted radially between the lugs 32 of the fixed support and the bore of the housing 18 so as to limit the intrusion of contaminating particles.
  • the procedure is as follows.
  • the subassembly formed by the rolling bearing 20 and the eccentric 22 is mounted on the trunnion 14b of the worm, the external surface 36 of the said eccentric being in radial contact against the cylindrical bearing surface 38 of the housing 18.
  • the end 24a of the torsion spring is mounted in the recess 40 of the eccentric and the opposite end of the spring against the associated bearing lug 32 of the support 16.
  • the support 16 is made to pivot relative to the eccentric 22, to the worm 14 and to the housing 18 so as to prestress or preload the spring 24 between the support and the eccentric.
  • the support is prevented from rotating, for example by hammering or crimping, the axial retention of the said support on the housing being achieved by the lugs 32.
  • the spring 24 thus exerts a permanent circumferential force or torque on the eccentric 22 tending to permanently push the said eccentric, the bearing 20 and the worm 14 radially towards the wheel 12. This makes it possible to automatically compensate for the wear of the thread or threads of the worm 14 and/or of the teeth of the wheel 12 that may appear over time.
  • the permanent circumferential force exerted by the spring 24 on the eccentric 22 makes it possible to obtain the angular movement of the said eccentric relative to the housing 18 and to the support 16, which causes a radial movement of the rolling bearing 20 and of the worm 14 towards the wheel 12.
  • the support 16 comprises a first radial protuberance 50 comprising a hollow cavity 52 provided for the housing, during assembly, of an operating key (not shown) in order to make it easier to pivot the support 16 for preloading the spring 24.
  • the support 16 also comprises a second radial protuberance 54 opposite to the protuberance 50 and provided with a through recess 56.
  • the housing 18 comprises a radial ear 58 against which the protuberance 54 rests and provided with a recess 60.
  • the wear-compensation device is used for a gear of the type with a wheel and with a worm that can be installed in an assisted-steering mechanism.
  • the device may however be used for other types of crossed or non-crossed gear sets, for example a gear of toothed wheels, a gear of bevel pinions, a gear with a wheel and with a rack, and be used in other applications.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • Power Steering Mechanism (AREA)

Abstract

The wear-compensation device for a gear comprises a fixed support (16) capable of being fixed axially on an external element (18) in order to keep the device on the said external element, a bearing (20) designed to be mounted on a shaft (14b) comprising one of the wheels of the gear, an eccentric (22) mounted on the bearing and designed to be in contact with the external element, the said eccentric being able to move angularly relative to the fixed support.
The device also comprises a torsion spring (24) mounted axially between the fixed support and the eccentric and capable of exerting a circumferential preload force on the said eccentric, the said spring (24) comprising a first end mounted inside a recess (40) of the eccentric and a second end interacting with the fixed support (16).

Description

  • The present invention relates to the field of wear-compensation devices for gear, notably used in assisted-steering mechanisms for motor vehicles.
  • An assisted-steering mechanism usually comprises an electric assistance motor and a worm mounted on an output shaft of the said motor and meshing with a toothed wheel for example fixed to the shaft of the steering column or connected to the steering rack via an intermediate pinion.
  • Patent US-B1-6,763,738 discloses an assisted-steering mechanism for a motor vehicle comprising means for adjusting the distance separating the axes of the worm and of the associated toothed wheel so as to be able to adjust the clearance that exists between the teeth of the gear during assembly.
  • This assisted-steering mechanism comprises no means to limit the phenomena of wear of the gear set over time.
  • In order to overcome this drawback, in the assisted-steering mechanism described in document WO 99/11502 , one end of the worm connected to the electric assistance motor is mounted rotatably in an eccentric bore of a movable sleeve, the said sleeve being connected to a compression spring. When there is wear on the teeth of the worm and of the wheel supported by the steering column shaft, the compression spring causes the sleeve to rotate inside the associated housing. This gives an automatic compensation for the wear of the gear.
  • This solution leads to a considerable number of assembly operations.
  • The object of the present invention is to overcome this drawback.
  • More particularly, the object of the present invention is to provide a wear-compensation device for a gear easy to manufacture, to install, having a restricted space requirement and economic.
  • In one embodiment, the wear-compensation device for a gear comprises a fixed support capable of being fixed axially on an external element in order to keep the device on the said external element, a bearing designed to be mounted on a shaft comprising one of the wheels of the gear, and an eccentric mounted on the bearing and designed to be in contact with the external element, the said eccentric being able to move angularly relative to the fixed support. The device comprises a torsion spring mounted axially between the fixed support and the eccentric and capable of exerting a circumferential preload force on the said eccentric. The torsion spring comprises a first end mounted inside a recess of the eccentric and a second end interacting with the fixed support.
  • Advantageously, the fixed support comprises a centring portion for centring the torsion spring. Preferably, the torsion spring is coaxial with the bearing.
  • The second end of the torsion spring may abut against a bearing lug of the fixed support.
  • In one embodiment, the fixed support comprises clip fastening means adapted to ensure the axial attachment of the device to the external element.
  • The fixed support may comprise a rotation blocking means capable of maintaining the predetermined angular position of the said support relative to the external element.
  • In one embodiment, the bearing comprises an inner ring designed to be mounted on the shaft supporting one of the wheels, an outer ring on which the eccentric is mounted, and at least one row of rolling elements placed between the said rings. Alternatively, the bearing may be a sliding bearing.
  • In one embodiment, the wheel is integrally formed on the shaft. The wheel may be integrally formed on the shaft so as to form a screw.
  • According to another aspect, the invention also relates to an assisted-steering mechanism for a motor vehicle comprising a wear-compensation device as defined above.
  • The present invention will be better understood on studying the detailed description of embodiments taken as non-limiting examples and illustrated by the appended drawings in which:
    • Figure 1 is a view in axial section of a wear-compensation device according to a first exemplary embodiment of the invention,
    • Figures 2 and 3 are exploded views in perspective of Figure 1,
    • Figure 4 is a view in axial section of a wear-compensation device according to a second exemplary embodiment of the invention, and
    • Figure 5 is an exploded view in perspective of Figure 4.
  • In Figure 1, a wear-compensation device, referenced 10 in its entirety, is associated with a gear of the type with a wheel 12 and with a worm 14. The gear illustrated is a crossed gear set and the axes 12a, 14a of the toothed gear and of the worm are orthogonal.
  • The device 10 comprises a fixed support 16 forming a cap designed to be mounted on a tubular housing 18 external to the said device, a rolling bearing 20 mounted on an end trunnion 14b of the worm, an eccentric 22 mounted on the rolling bearing, and a torsion spring 24 capable of applying a permanent circumferential force between the support 16 and the said eccentric. The worm 14 extends axially in the housing 18, the said housing comprising an opening 18a allowing the passage of the toothed wheel 12 so that the thread or threads of the worm mesh with the teeth of the wheel.
  • The bearing 20 (shown schematically) has a rotation axis 20a coaxial with the axis 14a of the worm. It comprises an inner ring mounted tightly on the trunnion 14b of the said worm and butting axially against a shoulder of the trunnion, an outer ring on which the eccentric 22 is mounted, a row of rolling elements, for example balls, and seals mounted radially between the said rings.
  • The fixed support 16 comprises a radial wall 26 closing off an axial end of the housing 18 and extended by an annular centring portion 28, coaxial with the axis 20a of the bearing and pressing axially against the inner ring of the said bearing. The centring portion 28 comprises a blind hole 30 inside which the trunnion 14b of the worm extends with a radial clearance. The support 16 also comprises a plurality of axial lugs 32 extending from the wall 26 axially on the side of the centring portion 28. The lugs 32 are spaced relative to one another in the circumferential direction. Each lug 32 comprises, at its free end, a hook extending radially outwards and designed to interact with a matching recess arranged in the bore of the housing 18. The lugs 32 form snap-fitting or clip fastening means for fitting the support 16 to the housing making it possible to obtain the axial attachment of these two elements. The support 16 may for example be made in a single piece by moulding a synthetic material.
  • The eccentric 22 comprises a cylindrical bore 34 inside which is tightly mounted the outer ring of the bearing 20 and a cylindrical external surface 36, with an axis 36a which is radially offset relative to the axis 20a of the bearing. The bore 34 comprises a radial protuberance (not referenced) extending inwards and forming an axial stopping surface for the outer ring of the bearing 20. The external surface 36 of the eccentric presses radially against a matching cylindrical bearing surface 38 of the bore of the housing 18. The eccentric 22 can move angularly relative to the fixed support 16, to the housing 18 and to the worm 14.
  • The radial wall 26 of the support 16 and the eccentric 22 delimit an axial space in which the torsion spring 24 is placed. The spring 24, coaxial with the axis 20a of the bearing, is provided with a first end 24a (Figure 2) housed inside a recess 40 arranged on the eccentric, with a second end butting in the circumferential direction against one of the lugs 32 of the fixed support, and with a working portion 24b connecting the said ends and winding radially around the centring portion 28 of the said support. In the embodiment illustrated, the turns of the spring 24 have, in cross section, a square profile. Alternatively, it is of course possible to provide turns having another profile, for example circular.
  • The device 10 also comprises an annular seal 42 mounted radially between the lugs 32 of the fixed support and the bore of the housing 18 so as to limit the intrusion of contaminating particles.
  • In order to mount the device 10 on the housing 18, the procedure is as follows. In a first step, the subassembly formed by the rolling bearing 20 and the eccentric 22 is mounted on the trunnion 14b of the worm, the external surface 36 of the said eccentric being in radial contact against the cylindrical bearing surface 38 of the housing 18. In a second step, the end 24a of the torsion spring is mounted in the recess 40 of the eccentric and the opposite end of the spring against the associated bearing lug 32 of the support 16. Then, the support 16 is made to pivot relative to the eccentric 22, to the worm 14 and to the housing 18 so as to prestress or preload the spring 24 between the support and the eccentric. Once the predetermined angular position of the support 16 relative to the housing 18 is reached, the support is prevented from rotating, for example by hammering or crimping, the axial retention of the said support on the housing being achieved by the lugs 32.
  • The spring 24 thus exerts a permanent circumferential force or torque on the eccentric 22 tending to permanently push the said eccentric, the bearing 20 and the worm 14 radially towards the wheel 12. This makes it possible to automatically compensate for the wear of the thread or threads of the worm 14 and/or of the teeth of the wheel 12 that may appear over time. The permanent circumferential force exerted by the spring 24 on the eccentric 22 makes it possible to obtain the angular movement of the said eccentric relative to the housing 18 and to the support 16, which causes a radial movement of the rolling bearing 20 and of the worm 14 towards the wheel 12.
  • The embodiment illustrated in Figures 4 and 5, in which identical elements bear the same references, differs from the embodiment previously described in that the support 16 comprises a first radial protuberance 50 comprising a hollow cavity 52 provided for the housing, during assembly, of an operating key (not shown) in order to make it easier to pivot the support 16 for preloading the spring 24. The support 16 also comprises a second radial protuberance 54 opposite to the protuberance 50 and provided with a through recess 56. In this embodiment, the housing 18 comprises a radial ear 58 against which the protuberance 54 rests and provided with a recess 60. During assembly, when the recess 56 of the support is facing the recess 60 of the housing, the relative angular position of these two elements is immobilized by insertion of a rod 62 of the device into the said recesses.
  • In the embodiments illustrated, the wear-compensation device is used for a gear of the type with a wheel and with a worm that can be installed in an assisted-steering mechanism. The device may however be used for other types of crossed or non-crossed gear sets, for example a gear of toothed wheels, a gear of bevel pinions, a gear with a wheel and with a rack, and be used in other applications.

Claims (10)

  1. Wear-compensation device for a gear, characterized in that it comprises:
    - a fixed support (16) capable of being fixed axially on an external element in order to keep the device on the said external element,
    - a bearing (20) designed to be mounted on a shaft comprising one of the wheels of the gear,
    - an eccentric (22) mounted on the bearing and designed to be in contact with the external element, the said eccentric being able to move angularly relative to the fixed support, and
    - a torsion spring (24) mounted axially between the fixed support and the eccentric and capable of exerting a circumferential preload force on the said eccentric, the said spring (24) comprising a first end mounted inside a recess (40) of the eccentric and a second end cooperating with the fixed support.
  2. Device according to claim 1, wherein the fixed support (16) comprises a centring portion (28) for centring the torsion spring.
  3. Device according to claim 1 or 2, wherein the torsion spring (24) is coaxial with the bearing (20).
  4. Device according to any one of the preceding claims, wherein the second end of the torsion spring (24) abuts against a bearing lug (32) of the fixed support.
  5. Device according to any one of the preceding claims, wherein the fixed support (16) comprises clip fastening means (32) adapted to ensure the axial attachment of the device to the external element.
  6. Device according to any one of the preceding claims, wherein the fixed support (16) comprises a rotation blocking means (62) capable of maintaining the predetermined angular position of the said support relative to the external element.
  7. Device according to any one of the preceding claims, wherein the bearing comprises an inner ring designed to be mounted on the shaft supporting one of the wheels, an outer ring on which the eccentric is mounted, and at least one row of rolling elements disposed between the said rings.
  8. Device according to any one of the preceding claims, wherein the wheel is integrally formed on the shaft.
  9. Device according to claim 8, wherein the wheel is integrally formed on the shaft so as to form a screw.
  10. Assisted-steering mechanism for a motor vehicle comprising a wear-compensation device according to any one of the preceding claims.
EP12158024.5A 2011-03-09 2012-03-05 Wear-compensation device for a gear Active EP2497975B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1151933A FR2972514B1 (en) 2011-03-09 2011-03-09 WEAR COMPENSATION DEVICE FOR GEAR.

Publications (2)

Publication Number Publication Date
EP2497975A1 true EP2497975A1 (en) 2012-09-12
EP2497975B1 EP2497975B1 (en) 2014-06-25

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EP12158024.5A Active EP2497975B1 (en) 2011-03-09 2012-03-05 Wear-compensation device for a gear

Country Status (4)

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US (1) US8950280B2 (en)
EP (1) EP2497975B1 (en)
CN (1) CN102678883B (en)
FR (1) FR2972514B1 (en)

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FR2989755B1 (en) * 2012-04-23 2015-01-16 Skf Ab WEAR COMPENSATION DEVICE FOR GEAR AND ASSOCIATED MOUNTING METHOD.
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WO2017002393A1 (en) * 2015-06-29 2017-01-05 日本精工株式会社 Worm speed reducer
US10160479B2 (en) 2015-07-09 2018-12-25 Steering Solutions Ip Holding Corporation Eccentric adjustment retainer
DE102016223833A1 (en) * 2016-11-30 2018-05-30 Zf Friedrichshafen Ag Wear compensation for sliding bearing shafts
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EP2963782A4 (en) * 2013-02-28 2016-10-26 Nidec Sankyo Corp Motor device
WO2014180736A1 (en) * 2013-05-08 2014-11-13 Thyssenkrupp Presta Ag Damping eccentric motion link in ceps usage
US10053139B2 (en) 2013-05-08 2018-08-21 Thyssenkrupp Presta Ag Damping eccentric motion link in CEPS usage
CN105408189A (en) * 2013-05-08 2016-03-16 蒂森克虏伯普利斯坦股份公司 Damping eccentric motion link in CEPS usage
DE102013007883A1 (en) 2013-05-08 2014-11-13 Thyssenkrupp Presta Ag Springing eccentric rocker in CEPS application
CN105408189B (en) * 2013-05-08 2017-10-20 蒂森克虏伯普利斯坦股份公司 Damping eccentric motion connecting rod in CEPS purposes
WO2014202656A1 (en) * 2013-06-21 2014-12-24 Thyssenkrupp Presta Ag Play compensation for a pinion bearing
CN105377669B (en) * 2013-06-21 2018-05-08 蒂森克虏伯普利斯坦股份公司 Clearance for pinion bearing compensates
CN105377669A (en) * 2013-06-21 2016-03-02 蒂森克虏伯普利斯坦股份公司 Play compensation for pinion bearing
US9932066B2 (en) 2015-02-13 2018-04-03 Ims Gear Se & Co. Kgaa Plastic element for lash-free support
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CN104930177A (en) * 2015-05-28 2015-09-23 常州华达科捷光电仪器有限公司 Structure used for eliminating gear gap
CN104930161A (en) * 2015-05-28 2015-09-23 常州华达科捷光电仪器有限公司 Fine tuning structure

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US8950280B2 (en) 2015-02-10
EP2497975B1 (en) 2014-06-25
US20120227526A1 (en) 2012-09-13
CN102678883B (en) 2016-08-31
FR2972514A1 (en) 2012-09-14
CN102678883A (en) 2012-09-19
FR2972514B1 (en) 2013-09-06

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